Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer
Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

RN = hl/k

RN = ρ V l /μ

RN = μ cp/k

RN = V²/t.cp

RN = hl/k

RN = ρ V l /μ

RN = μ cp/k

RN = V²/t.cp

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Heat and Mass Transfer
Conduction is a process of heat transfer

From one particle of the body to another without the actual motion of the particles

None of these

From one particle of the body to another by the actual motion of the heated particles

From a hot body to a cold body, in a straight line, without affecting the intervening medium

From one particle of the body to another without the actual motion of the particles

None of these

From one particle of the body to another by the actual motion of the heated particles

From a hot body to a cold body, in a straight line, without affecting the intervening medium

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Heat and Mass Transfer
Thermal conductivity of water at 20°C is of the order of

0.42

0.23

0.1

0.51

0.42

0.23

0.1

0.51

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Heat and Mass Transfer
The critical temperature is the temperature

Above which a gas may explode

Above which a gas will never liquefied

Below which a gas does not obey gas laws

Below which a gas is always liquefied

Above which a gas may explode

Above which a gas will never liquefied

Below which a gas does not obey gas laws

Below which a gas is always liquefied

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Heat and Mass Transfer
Thermal conductivity of glass wool varies from sample to sample because of variation in

Composition

Density

Porosity

All of these

Composition

Density

Porosity

All of these

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Heat and Mass Transfer
The amount of heat flow through a body by conduction is

Dependent upon the material of the body

All of these

Directly proportional to the temperature difference on the two faces of the body

Directly proportional to the surface area of the body

Dependent upon the material of the body

All of these

Directly proportional to the temperature difference on the two faces of the body

Directly proportional to the surface area of the body

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Heat and Mass Transfer

Heat and Mass Transfer Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer Conduction is a process of heat transfer

Heat and Mass Transfer Thermal conductivity of water at 20°C is of the order of

Heat and Mass Transfer The critical temperature is the temperature

Heat and Mass Transfer Thermal conductivity of glass wool varies from sample to sample because of variation in

Heat and Mass Transfer The amount of heat flow through a body by conduction is

Heat and Mass Transfer
Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

Heat and Mass Transfer
Conduction is a process of heat transfer

Heat and Mass Transfer
Thermal conductivity of water at 20°C is of the order of

Heat and Mass Transfer
The critical temperature is the temperature

Heat and Mass Transfer
Thermal conductivity of glass wool varies from sample to sample because of variation in

Heat and Mass Transfer
The amount of heat flow through a body by conduction is